Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
trung han » trung phan, trung nhan, trung ha
han thong » han thuong, hang thong, nhan thong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (chieu sang)) - thanh trung han thong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (chieu sang)) - thanh trung han thong cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (chieu sang)) - thanh trung han thong cong dan toan cau*.